From: Michael Wallner <mike@php.net>
Date: Wed, 13 Jul 2016 08:05:39 +0000 (+0200)
Subject: fix #47
X-Git-Tag: RELEASE_2_6_0_BETA1~9
X-Git-Url: https://git.m6w6.name/?p=m6w6%2Fext-http;a=commitdiff_plain;h=a1185e34f27a1da2caa3479cab14383b96b53c39

fix #47
---

diff --git a/src/php_http_params.c b/src/php_http_params.c
index c722f06..c0071ac 100644
--- a/src/php_http_params.c
+++ b/src/php_http_params.c
@@ -522,6 +522,10 @@ static void merge_param(HashTable *params, zval *zdata, zval ***current_param, z
 
 static void push_param(HashTable *params, php_http_params_state_t *state, const php_http_params_opts_t *opts TSRMLS_DC)
 {
+	if (!state->current.val) {
+		return;
+	}
+
 	if (state->val.str) {
 		if (0 < (state->val.len = state->input.str - state->val.str)) {
 			sanitize_value(opts->flags, state->val.str, state->val.len, *(state->current.val), state->rfc5987 TSRMLS_CC);
diff --git a/tests/gh-issue47.phpt b/tests/gh-issue47.phpt
new file mode 100644
index 0000000..6956588
--- /dev/null
+++ b/tests/gh-issue47.phpt
@@ -0,0 +1,27 @@
+--TEST--
+Null pointer deref in sanitize_value
+--SKIPIF--
+<?php
+include "skipif.inc";
+?>
+--FILE--
+<?php
+echo "Test\n";
+
+$urls = [
+    "",
+    "? = ="
+];
+
+$url0=new http\Url($urls[0]);
+$url1=$url0->mod($urls[1]);
+
+echo $url1;
+
+?>
+
+===DONE===
+--EXPECTF--
+Test
+http://%s/
+===DONE===